GoHighLevel Voice AI API Guide

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GoHighLevel Voice AI Public API How-To Guide

If you use ClickUp or other project tools to manage automation work, you can easily document and track your Voice AI integrations with GoHighLevel using the public APIs described in this guide. This article explains, step by step, how to work with the Voice AI Generate Caller, State, Transfer Call, and Cleanup endpoints so you can control Voice AI callers from your own systems or flows.

The procedures below are based strictly on the official Voice AI public API documentation and show you how to structure requests, understand responses, and safely clean up resources.

Understanding GoHighLevel Voice AI Public APIs

The Voice AI public APIs in GoHighLevel let you programmatically:

  • Generate a new Voice AI caller and start an outbound call.
  • Retrieve the current state of that caller.
  • Transfer the ongoing call to a new phone number.
  • Cleanup and end the caller session when you are done.

All endpoints follow a simple JSON request and response pattern so you can integrate them into custom apps, CRMs, or automation platforms.

Prerequisites for Using GoHighLevel Voice AI APIs

Before you call these endpoints, ensure the following:

  • You have access to Voice AI features in your GoHighLevel account.
  • You know your API key or authentication method required by your environment.
  • You have a workspace or environment where Voice AI is enabled.
  • You have at least one eligible Voice AI agent or campaign available to trigger.

Consult the official Voice AI Public APIs documentation for any authentication or environment-specific details: GoHighLevel Voice AI Public APIs.

How to Use GoHighLevel Voice AI Generate Caller API

The Generate Caller endpoint is the starting point for most Voice AI workflows in GoHighLevel. It creates a new Voice AI caller session and typically starts an outbound call.

Step 1: Prepare your Generate Caller request

Your request body will usually include:

  • Identification of the Voice AI configuration or campaign.
  • Target phone number to call.
  • Optional metadata or tags for tracking in your systems.

The response will return key data such as:

  • A unique identifier for the Voice AI caller.
  • Initial status or state information.
  • Any error messages if the call could not be initiated.

Step 2: Store the caller identifier safely

Once you receive the Voice AI caller ID from GoHighLevel, store it in your application or database. This identifier will be used to query the state, transfer the call, and run cleanup later in the flow.

Checking Caller State with GoHighLevel Voice AI State API

The State endpoint lets you track how the Voice AI call is progressing inside GoHighLevel. This is essential for monitoring, reporting, and conditional automation.

Step 3: Send a State request using the caller ID

To check the status of a caller you previously created:

  1. Read the stored caller ID from your system.
  2. Call the State API endpoint with that ID in the URL or request body (as defined by the official documentation).
  3. Parse the JSON response to extract the current state fields.

The response can include details such as:

  • Current call status (for example: dialing, in-progress, completed).
  • Conversation or session information.
  • Any error or termination reasons if the call ended unexpectedly.

Step 4: Use state data in your workflows

You can use the state information from GoHighLevel to trigger logic in your system. Common examples include:

  • Updating CRM records with the latest call status.
  • Moving a lead to the next stage after the Voice AI call completes.
  • Triggering follow-up messages when a call outcome meets specific criteria.

Transferring Calls with GoHighLevel Voice AI Transfer API

The Transfer Call endpoint lets you move an active Voice AI call from GoHighLevel to a different phone number, such as a live agent or a separate department.

Step 5: Prepare transfer details

Before you request a transfer, make sure you have:

  • The caller ID of the running Voice AI session.
  • The destination phone number for the transfer.
  • Any required configuration options defined in your GoHighLevel Voice AI setup.

Step 6: Call the Transfer API

To transfer the call:

  1. Build a JSON payload that includes the caller ID and new destination number.
  2. Send the payload to the Transfer API endpoint.
  3. Check the response for confirmation that the transfer was accepted.

The response may indicate:

  • That the transfer request was successful and is in progress.
  • Any errors related to the destination number or session.

Step 7: Confirm transfer via state checks

After starting a transfer, you can use the State API again to confirm how GoHighLevel handled the request. Monitor the status until the call reaches a final state.

Cleaning Up Callers with GoHighLevel Voice AI Cleanup API

The Cleanup endpoint is important for ending sessions and removing any lingering caller resources from GoHighLevel once your workflow is done.

Step 8: Decide when to clean up

Typical points to call the Cleanup API include:

  • After a Voice AI call has finished and all needed data is stored.
  • After a transfer has been completed and you no longer need the Voice AI session.
  • When an error occurs and you want to remove partial sessions.

Step 9: Send a Cleanup request

To clean up a caller:

  1. Use the Voice AI caller ID that you previously saved.
  2. Send a request to the Cleanup API endpoint with that ID.
  3. Confirm from the response that the caller has been successfully cleaned up.

By regularly using Cleanup, you keep your GoHighLevel Voice AI environment organized and free of unused sessions.

Best Practices for GoHighLevel Voice AI Integrations

When designing integrations with these Voice AI public APIs, follow these recommendations:

  • Always log caller IDs: Store caller identifiers returned by GoHighLevel in a durable system so you can reliably track state, transfer calls, and clean up.
  • Handle errors gracefully: Check for error fields in every API response and build retry or fallback logic.
  • Secure your credentials: Keep API keys or tokens in a secure vault and never expose them in client-side code.
  • Monitor usage: Review logs and reporting to understand how many callers, transfers, and cleanup operations you are running.

If you want strategic help designing automation and integration flows around these APIs, you can consult specialists at Consultevo for additional implementation guidance.

Where to Find Official GoHighLevel Voice AI API Details

This how-to focuses on the logical usage of the Voice AI public APIs in GoHighLevel. For exact endpoint URLs, request schemas, authentication rules, and field-level definitions, always refer to the official documentation page: Voice AI Public APIs.

By combining the Generate Caller, State, Transfer Call, and Cleanup endpoints, you can build complete, automated Voice AI workflows in GoHighLevel that integrate smoothly with your existing systems.

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